/**
 * @file quit.js — Quit AgentHub (issue #65, 9router's tray "Quit"): stop the
 * dashboard and every lane pane, and keep it stopped until the user starts it
 * again. "Stopped" is the file `<data dir>/runtime/stopped`: the plugin
 * bootstrap starts no server while it exists, and every server that starts
 * clears it — so a boot or login through an enabled autostart unit still
 * brings the dashboard back, and only Claude Code's SessionStart is held off.
 * Kept free of anything but fs/path: the bootstrap reads it before the
 * runtime's dependencies are installed.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const fs = require("fs");
const path = require("path");
const { getDataDir } = require("./claude-home");

function flagPath(rt = path.join(getDataDir(), "runtime")) {
  return path.join(rt, "stopped");
}

function isQuit(rt) {
  return fs.existsSync(flagPath(rt));
}

function markQuit(rt) {
  const file = flagPath(rt);
  fs.mkdirSync(path.dirname(file), { recursive: true });
  fs.writeFileSync(file, `${new Date().toISOString()}\n`, "utf8");
}

function clearQuit(rt) {
  fs.rmSync(flagPath(rt), { force: true });
}

/**
 * Stops this server. A unit of ours that is running is stopped THROUGH its
 * service manager: a SIGTERM'd server exits 0, which `Restart=always` /
 * `KeepAlive` answer by starting it again. Async spawns, because launchd's
 * `bootout` waits for the job — this process — to exit. If this process was
 * not the unit's (a second dashboard beside it), it follows a moment later.
 */
function stopServer({
  svc = require("../../scripts/service-manager"),
  spawn = require("child_process").spawn,
  kill = () => process.kill(process.pid, "SIGTERM"),
} = {}) {
  const owned =
    svc.systemctlAvailable() && svc.unitIsOurs("agenthub") && svc.unitIsActive("agenthub");
  if (!owned) return kill();
  const argv =
    svc.kind === "launchd"
      ? ["launchctl", ["bootout", `gui/${process.getuid()}/io.smartgift.agenthub`]]
      : ["systemctl", ["--user", "stop", "--no-block", "agenthub.service"]];
  spawn(argv[0], argv[1], { detached: true, stdio: "ignore" }).unref();
  setTimeout(kill, 5000).unref();
}

module.exports = { flagPath, isQuit, markQuit, clearQuit, stopServer };